METHOD OF PRODUCING HALOGEN-SUBSTITUTED POLYMERS Russian patent published in 2016 - IPC C08F14/06 C08F214/06 C08F2/42 C08F2/38 

FIELD: chemistry.

SUBSTANCE: method is carried out by aqueous suspension, microsuspension, emulsion or microemulsion polymerisation of at least one halogen-substituted monomer, e.g. vinyl chloride, as an independent component or combined with one or more other vinyl monomers, preferably with content of less than 50 wt % of the one or more other vinyl monomers. The method is characterised by that it includes adding at least one agent which slows down radical polymerisation, which is dialkyl-N,N-substituted hydroxylamine, and at least one perhalogenate as a bleaching agent, wherein the perhalogenate-anion counterion is selected from lithium (Li), sodium (Na), potassium (K), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), zinc (Zn), aluminium (Al), lanthanum (La) and cerium (Ce). Also disclosed is the use of the agent which slows down radical polymerisation with at least one perhalogenate, as indicated above, in the method of producing halogen-substituted polymers, as well as a composition for use in the method of producing halogenated polymers.

EFFECT: obtaining polymers with good whiteness properties and stability of whiteness.

13 cl, 1 tbl, 11 ex